Three-horse swingletree.



R. KJUUS. THREE-HORSE SWINGLBTREE. APPLIOATION FILED MAR. 20, 1913.

1, 1 1 2,625. Patented 0011.6, 1914 mi w W itnessea' Inventor:

A tto'rney.

THE NORRIS PETERS 60.. 1 =!-l01'o-LI7'I-!L".v WASHINGTON, u. C.

RAGNAR KJUUS, OF NES, NEAR AABNES, NORWAY.

THREE-HORSE SWINGLETREE.

Specification of Letters Patent.

Application filed March 20, 1913.

Patented (Pet. 6, 1914.

Serial No. 755,652.

To all whom it may concern:

Be it known that I, RAGNAR KJUUs, a subject of the King of Norway,residing at Nes, near Aarnes, Norway, have invented certain new anduseful Improvements in Three-Horse Swingletrees; and I do hereby declarethe following to be a full, clear, and exact descriotion of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, ref erence being had to theaccompanying drawings, and to letters or figures of reference markedthereon, which form a part of this specification.

My invention relates to improvements in the construction of three horseswingletrees of the kind often used on selfbinders and similaragricultural machinery.

Three horse swingletrees usually are arranged to swing on a verticalpin, one arm of the double lever thus formed being double the length ofthe other arm. An ordinary doubletree with two swingletrees is hinged tothe shorter arm where two horses are pulling the third horse pulling atthe end of the long arm.

To use a machine or vehicle provided with such three horse swingletreewith two horses only, it is necessary to unhinge the three horseswingletree and fix the doubletree directly on the machine or the beam.This is the case with most selfbinders now on the market. Using aselfbinder with the known form of three horse swingletree involves thefurther disadvantage that the machine will tilt until it strikes theground in front as soon as the h rses are not pulling. This is due tothe fact that the front part of the machine is carried by the two horsespulling at the doubletree keeping the tugs taut. As soon as the horsesstop pulling the third horse will move back so far that the tugs for thetwo other horses get quite slack and the machine will tilt till itstrikes the ground with its front part so that it must be lifted by thedriver before it can be started again.

According to my present invention these disadvantages are avoided byproviding a stop which prevents the tree from swinging more than acertain amount from the middle position.

When only two horses are used the three horse swin letree is engaged bythe said stop and can not swing farther. Thus it is not necessary tounhinge and rearrange the parts when it is desired to drive with twohorses instead of three.

On the drawings: Figure 1 represents a plan of the arrangement and Fig.2 a side view of same.

A is the beam, B the double tree and C the three horse swingletree. Thelatter is pivoted on a pin D carried by a support G, H. and the doubletree is hinged to its shor er arm by means of link F represents a stopwhich may be of any preferred construction and which is secured to theupper face of the beam A, just in rear of the doubletree 13, between thelatter and the swingletree. By this arrangement it will be noted that itis possible to utilize the machine with two horses without disconnectingthe three-horse swingletree. It will also be seen that when the thirdhorse is not pulling the stop prevents the swingletree from being movedforward beyond the desired point, and likewise prevents the forwardmovement of the doubletree.

As will be noticed the three horse swingle can only swing a shortdistance toward the double tree without being engaged by the stop F.

I claim:

1. A three-horse swingletree comprising a beam, a swingletree pivotallyconnected therewith, a double tree pivotally connected with theswingletree and a stop arranged between the swingletree and double treeto limit the forward movement of the double tree when two horses areattached to the double tree and the swingle tree is left free.

2. A three-horse swingletree comprising a beam, a swingletree, a supportbetween the beam and swingletree to which the latter is pivotallyconnected, a double tree, a link pivotally connecting the swingle anddouble trees, and a stop located on the beam between the swingletree anddouble tree whereby forward movement of the latter is limited when twohorses are attached to the double tree and the swingletree is left free.

In testimony that I claim the foregoing as my invention, 1 have signedmy name in presence of two subscribing witnesses.

RAGNAR KJUUS.

Witnesses M. E. GULBoRMsEN, RUTH LINDs'rRIM.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

